feat: toml config support (#9)

## What's new
- TOML config support 
- add config init command to justfile
https://github.com/versenilvis/IRIS/pull/9/commits/a5bb6c23d74ca73385b3590d2eb275ce6429906b
- add copy binary file to local bin on reload
https://github.com/versenilvis/IRIS/pull/9/commits/4da3acdbc58c28f20fa0021d15fec82823ba392b
- init config on setup
https://github.com/versenilvis/IRIS/pull/9/commits/fb48b6bb832f38e24fab9211d92858bab9a58a07

## Fix
- add lsof to support macos because /proc filesystem is Linux-specific
and does not exist on macOS 0439d829573864fcf902fc4127f7d45384bfab01
- git push doesnt suggest current branch, fix
https://github.com/versenilvis/IRIS/pull/9/commits/b498532b401b764a4a1a2c70b3cb44b7caf72320
- use timeout context for lsof command in reload handler
https://github.com/versenilvis/IRIS/pull/9/commits/1a2baee951e6538a729da12aedfe53960e51102d

justfile

@@ -15,11 +15,17 @@ optimized-build:
 run:
     @./iris
 
+# initialize default config file
+[group('dev')]
+config-init:
+    @./iris config init
+
 # re-build and reload iris
 [group('dev')]
 [linux, macos]
 reload:
     @go build -o iris main.go
+    @if [ -f ~/.local/bin/iris ]; then rm -f ~/.local/bin/iris && cp ./iris ~/.local/bin/iris; fi
     @if [ -n "${IRIS_PID:-}" ]; then kill -USR1 $IRIS_PID 2>/dev/null || true; fi
     @if [ -z "${IRIS_FD:-}" ]; then ./iris; fi